Electrical drying apparatus.



G. W. RICHARDSON.

ELECTRICAL DRYING APPARATUS.

APPLIGATION FILED JUNE 1, 1908.

963,942, Patented July 12, 1910.

2 SHEETS-SHEET l,

4 TTU/WYE K G. W. RICHARDSON.

ELECTRICAL DRYING APPARATUS.

APPLICATION FILED JUNE 1, 1908.

Patented July 12,1910.

4 2 SHEETS-SHEET 2.

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, UNITED sTATEs PATENT oEEioE kGEORGIE! vW'. RICHARDSON, 01'v PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALETO STEPHEN T. MAJOR, 0F PENCOYD, PENNSYLVANIA.

ELECTRICAL DRYING APPARATUS.

Specification of Letters Patent.

Patented July 12, 1910.

To all whom it may concern:

i Be it known that I, GEORGE W. RICHARD- soN, a citizen of the United States, residing in the city of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented certain Improvements in Electrical Drying Apparatus, of which the following is a specification.

This invention is an apparatus, designed particularly for drying and smoothing or ironing blue prints. Where this work is conducted on a large scale, the usual methods require a great deal of time and space Vwhich are saved by the use of my apparatus, which will dry, smooth and deliver the paper rapidly and regularly. 1

The invention is illustrated in the accompanying drawings in which Figure 1 is a broken sectional elevation of the preferred form of the mechanism; Fig. 1a is a sectional view showing the details of a bearing; Figi 2 is an end elevation of the mechanism, part being shown broken away, and Fig. 3 is a vertical sectional view taken transversely through the mechanism.

T he mechanism illustrated in thedrawings has a frame comprising the standards or lower housing members 1 and 2 connected by rods 3. Bearings 4 and 5 are provided in the respective standards to carry the hollow roller 6 and the insulating cylinder 7 located within this roller. At one end the roller has the hollow spindle 8 journaled within the bearing 4 and on a hollow spindle 9 of the cylinder 7; and, at the other end, the cylinder 7 has the hollow spindle 10 ixedas by a key, in the bearing 5, while the roller has the bearing 11 journaled on ment of the wedging members.

j this spindle. The frame hasv the top housing members 13, connected by rods 3, hinged by a rod `14 to the bottom housing members and provided with wedge shaped recesses 15 engaging like projections 16 on the lower members, a bolt 17 normally holding the upper and lower members together in the registered relation effected by the engage- Ways 18, radially disposed with reference to the axis of the roller 6, are formed in the upper housing members, and movable blocks or journal bearings 19 are disposed in these ways. The blocks are pressed down' by springs 20 which .bear against them and against the caps 21, the latter being carried bers to adjust the tension by screws 22 movable in the housing memof the springs.l Rollers 23 have their spindles 24 ournaled in the bearings 19 so that they are circularly disposed and normally bear against the roller 6. A guide roller 25 is journaled in the standards in position vto carry paper or other material between the rollers 6 and 23 which are heated so that they dry and iron it. l

To draw the material to be ironed and dried through the rollers 6 and 23, the roller 6 is revolved by power applied through a gear train, comprising the spur wheel 25 fixed ato the journal 9, the revoluble pinion 26 engaging the wheel 25, the spur wheel 27 xed tothe pinion 26, the pinion 28 engagiig the wheel 27, the spur wheel 29 xed to t e the wheel 29, the speed reducing train being adapted for the use of an electric motor of usual type. To heat the rollers, a resistance coil 31 is carried by thecylinder 7 and connected in a circuit having wires 32 and 33 passed through the hollow spindles 9 and 10.

The apparatus provides, in the electrically heated main roller and the coacting circularly arranged spring pressed auxiliary rollers, an extended and flexible drying and smoothing operation, inwhich lthe pressure can be varied to accommodate the requirements. The hinged housing which carries the radially movable rollers-provides means for withdrawing the latter from the main roller to give access to the parts for any desired reason.

pinion 28 and' a pinion 30 engaging for drying and. smoothing blue prints, it may be used for performing like operations upon cloth or other materials.

Having described my invention, I claim:

1. In apparatus of thev class described, housing members, a main roller revolubly mounted in said members,- a stationary coil within said roller, housing members hinged on said members irst named, and a set of auxiliary rollers carried by said hinged housing members and coacting with said main roller.

2. In apparatus of the class described,` housing members, `a hollow roller having a hollow spindle j ournaled therein, an insulating cylinder having a spindle at one end supported in said hollow spindle and means- In witness whereof I have hereunto set my name this 28th day of May, A.. D. 1908, Y housing members hinged to said housing in the presence of the subscribing witnesses. 10 members rst named, and aset of spring GEORGE W. RICHARDSON. pressed auxiliary rollers carried by and Witnesseszmovable in said hinged housing members ROBERT JAMES EARLEY, radially to said main roller, Jos. G. DENNY, J 1'.

at the other end for fixin it to one of said members, a coil carried y' said cylinder, 

